Internet of Things is a symbol of modern electronics. Possibility of connecting various devices to remote servers, data clouds and even to each other creates a revolution based on smart, autonomous systems in quite different fields of our life. Flexible building automation, environmental monitoring, wearable medical devices or intelligent wehicles are only a few examples of IoT use cases. Thanks to broad range of modules and development platforms available on the market you can easily and fast check your design idea. One of the most interesting product families in this area is a series of Particle IoT modules. They contain powerful ARM Cortex-Mx CPU, a built-in wireless module and all essential stuff (power supply, LED indicators and so on) allowing you to run your program almost immediately, without effort needed to design and develop custom electronics including microcontroller, RF transceiver and at least basic peripherals. The great advantage of Particle IoT modules is a broad offer of compatible modules and accessories.